Re: [MV] Mixing batteries

From: Thomas M McHugh (tmmchugh@msn.com)
Date: Tue Apr 29 2003 - 19:18:19 PDT


If you study the theory of batteries, you will find that paired batteries
react to the level or power of the weakest battery.

When you buy a pair of batteries & want the best service, buy a pair from
the exact same lot. Even batteries made on different days can be a lesser
than optimum match.

Trailer Life Magazine had a great article a long time ago & repeated it
again a few years ago.

I will probably jinx myself now, but, the pair of batteries in my travel
trailer are over 8 years old. Most dealers & battery companies say that
3 - 4 years usage is all you will get. OK now I will have to buy
batteries this year.

Tom McHugh, NJ
1952 M38A1
M-416 Trailer
MVPA, MTA

----- Original Message -----
From: "Bruce Beattie" <bruce@eecs.berkeley.edu>
To: "Military Vehicles Mailing List" <mil-veh@mil-veh.org>
Sent: Tuesday, April 29, 2003 7:58 PM
Subject: Re: [MV] Mixing batteries

> Ok, I'll bite, Why would it make a difference if you use two different
> chemistries?
> As far as I know batteries don't talk to each other, so how on earth can
they
> tell if the other battery is different.
> The electrical load on each battery is going to depend on the application,
> and in 24 volt settups
> on CUCV's the loads and charging patterns are radicaly different from what
I
> can see. Not that I am
> a guru about this sort of thing.
> Bruce MVPA 23824
>
> "Employee@MilVeh.com" wrote:
>
> > If you are replacing older 6TL batteries with new 6TMF
> > (or 6TLFP) batteries, it is desirable not to mix 6TL
> > with 6TMF/6TLFP in the vehicle/equipment. The older
> > 6TL cases are all green, including the top.
> >
> > The newer styles 6TLFP and 6TMF have black tops and a
> > green case or brown case. The reason is that the
> > chemistries are different. Bottom line: Its most
> > desirable to have "black tops with black tops" and
> > "green tops with green tops."
> >
> > If you need to know Army approved NSNs for other types
> > of batteries, like those needed for communications and
> > electronics, the Army CECOM-LRC website gives common
> > use batteries, both commercial and MILSPEC styles, in
> > their "Preferred Power Sources" listing.
> >
> > --- RKubu@aol.com wrote:
> > > List,
> > > I know there was a thread recently that covered
> > > mixing batteries. I cannot locate the messages and
> > > there is currently no list archive. Is it OK to mix
> > > 6TLs and 6TMFs? The latter look identical to the
> > > former and I was told they will work in a 5 ton.
> > >
> > > Thanks,
> > > Bruce
> > >
> > >
> > >
> > >
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>
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>



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